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Fraternity hazing is often a test of wills, pushing young recruits to their physical limits. It is often dangerous, and it is never legal – which is why so many fraternity chapters across the country find themselves tossed off campus.

On Wednesday night members of the Baruch college chapter of Pi Delta Psi are at the heart of a criminal investigation to find how a freshman died in an off-campus pledging ritual this past weekend.

Just a few months shy of its 20th anniversary, Pi Delta Psi, a nationally-recognized Asian-American Cultural fraternity – is facing tough questions about its pledging practice.

Nineteen-year-old Baruch College freshman Chun “Michael” Deng was knocked unconscious and ultimately died as a result of what’s being described as an unsanctioned pledging activity that took place in the front yard of a house in the Poconos.

Prosecutors in Monroe County, Pennsylvania, tell the news agency Reuters they are trying to identify which of the roughly thirty frat members are responsible for delivering the tackle, or tackles that led to Deng’s fatal injuries.

Baruch College released a statement Wednesday saying it had no knowledge of the off campus pledging event, adding:

“Pi Delta Psi did not request permission nor were they approved by Baruch on this matter…Michael’s death is a deeply painful reminder that no individual should ever be put into a position where his or her personal safety is in jeopardy.”